Arm for a lighting fixture



FIG. 1 is a left side view of the arm for a lighting fixture, and theright side view is a mirror image thereof;

FIG. 2 is a front view of the arm for a lighting fixture; and

FIG. 3 is a back view of the arm for a lighting fixture;

FIG. 4 is a top view of the arm for a lighting fixture; and,

FIG. 5 is a bottom view of the arm for a lighting fixture.

The ornamental design for an arm for a lighting fixture, as shown anddescribed.